Announcing an arrival: New app helps visually impaired pedestrians traverse work-zone areas
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University of Minnesota researchers have developed a smartphone app that works in conjunction with embedded sensors on the smartphone and Bluetooth technology to provide routing instructions to pedestrians as it detects upcoming work zones. As specified in the Manual on Uniform Traffic Control Devices (MUTCD), temporary traffic control (TTC) in work zones must accommodate pedestrians with difficulties, with one of the requirements being to provide audible information for the visually impaired. Details of the app's design and function are presented, along with results of functionality testing.